between these two systems determines our personalities, our outlooks, our characters, our emotions, and our behaviors. You may have heard this theory introduced under different names (slow thinking vs. fast thinking, the unconscious vs. the conscious, reasoning vs. intuition, automatic thinking vs. controlled thinking). For the purposes of this book, I will use the terms System 1 and System 2. Understanding these two systems and wiring or rewiring them in specific ways will lead you to a free and meaningful